<template>
    <div>
    <!-- 面包屑导航 -->
<el-breadcrumb separator="/">
  <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
  <el-breadcrumb-item><a href="/">权限管理</a></el-breadcrumb-item>
  <el-breadcrumb-item>角色列表</el-breadcrumb-item>
</el-breadcrumb>
<!-- 卡片视图 -->
<el-card>
    <!-- 添加角色按钮区域 -->
    <el-row>
        <el-col>
            <el-button type="primary" @click="addDialogVisible=true">添加角色</el-button>
        </el-col>
    </el-row>
    <!-- 角色列表区域 -->
    <el-table :data='rolelist' border stripe>
          <!-- 索引列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom',i1===0?'bdtop':'','vcenter']" v-for="(item1, i1) in scope.row.children" :key="item1.id">
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag closable @close="removeRightById(scope.row,item1.id)">{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <!-- 通过 for 循环 嵌套渲染二级权限 -->
                <el-row :class="[i2===0? '':'bdtop','vcenter']" v-for="(item2, i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success" closable @close="removeRightById(scope.row,item2.id)">{{item2.authName}}</el-tag>
                      <i class="el-icon-caret-right"></i>

                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" v-for="(item3, i3) in item2.children" :key="item3.id" closable @close="removeRightById(scope.row,item3.id)">{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
            <!-- <pre>{{scope.row}}</pre> -->
          </template>
        </el-table-column>
        <!-- 展开列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300">
            <template slot-scope="scope">
                <!-- 修改按钮 -->
                <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
                <!-- 删除按钮 -->
                <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRole(scope.row.id)">删除</el-button>
                <!-- 分配权限按钮 -->
                <el-button type="warning" icon="el-icon-setting" size="mini" @click="showSetRightDialog(scope.row)">分配权限</el-button>
            </template>
        </el-table-column>
    </el-table>
    <!-- 角色列表区域 -->
</el-card>
<!-- 添加权限的对话框 -->
<el-dialog
  title="添加角色"
  :visible.sync="addDialogVisible"
  width="50%" @close="addDialogClose">
  <!-- 内容主体区域 -->
  <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="addForm.roleName"></el-input>
  </el-form-item>
  <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="addForm.roleDesc"></el-input>
  </el-form-item>
  </el-form>
  <!-- 底部区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addrules">确 定</el-button>
  </span>
</el-dialog>
<!-- 修改角色的对话框 -->
<el-dialog
  title="修改角色"
  :visible.sync="editDialogVisible"
  width="50%" @close="editDialogClose">
  <el-form :model="editForm" :rules="addFormRules" ref="editFormRef" label-width="100px">
  <el-form-item label="角色名称" prop="roleName">
    <el-input v-model="editForm.roleName"></el-input>
  </el-form-item>
   <el-form-item label="角色描述" prop="roleDesc">
    <el-input v-model="editForm.roleDesc"></el-input>
  </el-form-item>
  </el-form>
  <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editRoleInfo">确 定</el-button>
  </span>
</el-dialog>
<!-- //分配权限的对话框 -->
<el-dialog
  title="分配权限"
  :visible.sync="setRightDialogVisible"
  width="50%" @close="setRightDialogClosed">
  <el-tree :data="rightlist" :props="treeProps" show-checkbox node-key="id" default-expand-all :default-checked-keys="defKeys" ref="treeRef"></el-tree>

  <span slot="footer" class="dialog-footer">
    <el-button @click="setRightDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="allotRights">确 定</el-button>
  </span>
</el-dialog>
    </div>
</template>
<script>
import { log } from 'util';
export default {
    data(){
        return{
            //所有角色列表数据
            rolelist:[],
            //控制添加角色对话框的显示与隐藏
            addDialogVisible: false,
            //控制编辑角色对话框的显示与隐藏
            editDialogVisible:false,
            //控制分配权限对话框的显示与隐藏
            setRightDialogVisible:false,
            //所有权限的数据
            rightlist:[],
            //树形控件的属性绑定对象
            treeProps:{
              label:'authName',
              children:'children'
            },
            //默认选中的节点id值数组
            defKeys:[],
            //当前即将分配权限的角色id
            roleId:'',
            //添加角色的表单数据
            addForm:{
                roleName:'',
                roleDesc:'',
            },
            //编辑角色的表单数据
            editForm:{
               
            },
            //添加角色的验证规则对象
            addFormRules:{
            roleName:[
              {required :true, message:'请输入角色名称',trigger:'blur'},{min: 2, max: 10, message:'角色名的长度在2~10个字符之间',trigger:'blur'}
            ],
            roleDesc:[
              {required :true, message:'请输入角色描述',trigger:'blur'},{min: 2, max: 20, message:'角色描述的长度在2~20个字符之间',trigger:'blur'}
            ],
        }

        }
    },
    created(){
        this.getRoleList()
    },
   methods: {
        async getRoleList(){
           const {data:res}= await this.$http.get('roles')
           if(res.meta.status!==200) {
              return this.$message.error('获取角色列表失败')
          }
          this.rolelist=res.data
        //   console.log(this.rolelist);   
    },
    //监听关闭用户对话框的关闭事件
    addDialogClose(){
         this.$refs.addFormRef.resetFields()
    },
    addrules(){
      this.$refs.addFormRef.validate(async valid=>{
        // console.log(valid);
        if(!valid) return
        //可以发起添加角色的请求
      const {data:res}= await this.$http.post('roles',this.addForm)
      // console.log(res);
      if(res.meta.status!==201) {
              return this.$message.error('添加角色列表失败')
          }
          this.$message.success('添加角色列表成功')
          //隐藏添加对话框
          this.addDialogVisible=false
           this.getRoleList()

      })
    },
    //展示编辑用户的对话框
    async showEditDialog(id) {
      // console.log(id);
     const {data:res}= await this.$http.get('roles/'+id)
     if(res.meta.status!==200) {
              return this.$message.error('添加角色列表失败')
          }
          this.editForm=res.data
      this.editDialogVisible=true
    },
    //监听修改角色对话框的关闭事件
    editDialogClose(){
      this.$refs.editFormRef.resetFields()
    },
    //修改角色信息并提交
    editRoleInfo() {
       this.$refs.editFormRef.validate(async valid=>{
        //  console.log(valid);
        if(!valid) return
        //发起修改角色的数据请求
      const {data:res}= await this.$http.put('roles/'+ this.editForm.roleId,
      {roleName:this.editForm.roleName,
       roleDesc:this.editForm.roleDesc})
        // console.log(res);
        // console.log(this.editForm.roleId);
        
      if(res.meta.status!==200) {
        return this.$message.error('更新角色信息失败')
      }
      //关闭对话框
      this.editDialogVisible=false
      //刷新数据列表
      this.getRoleList()
      //提示修改成功
      this.$message.success('更新角色信息成功')
         })
    },
    //根据id删除对应的角色
    async removeRole(id){
      // console.log(id);
      //弹窗询问是否删除
      const roleResult=await this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        // console.log(roleResult);
        //如果用户确认删除 则返回值为字符串 confirm
        if(roleResult!=='confirm'){
          return this.$message.info('已经取消删除')
        }
        const {data:res}=await this.$http.delete('roles/' +id)
        if(res.meta.status!==200){
          return  this.$message.error('删除用户失败')
        }
        this.$message.success('删除用户成功')
        this.getRoleList()
    },
    async removeRightById(role,rightId){
      //弹框提示用户是否要删除
        const confirmResult= await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err=>err)
        if(confirmResult!='confirm'){
          return this.$message.info('取消了删除')
        }
        // console.log('确认了删除');
      const {data:res}= await this.$http.delete(`roles/${role.id}/rights/${rightId}`)
        if(res.meta.status!==200) {
          return this.$message.error('删除权限失败')
        }
        // this.getRoleList()
        role.children=res.data
    },
    //展示分配权限的对话框
   async showSetRightDialog(role){
     this.roleId=role.id
      //获取所有权限的数据
    const {data:res}= await this.$http.get('rights/tree')
    if(res.meta.status!==200){
      return this.$message.error('获取权限失败')
    }
    //把获取到的权限数据保存到data中
    this.rightlist=res.data
    // console.log(this.rightlist);
    //递归获取三级节点的id
      this.getLeafKeys(role,this.defKeys)
      this.setRightDialogVisible=true
    },
    //通过递归的形式 获取角色下所有的三级权限的id 并保存到 defKeys数组中
    getLeafKeys(node,arr){
      //如果当前Node节点不包含children属性 则是三级节点
      if(!node.children){
        return arr.push(node.id)
      }
      node.children.forEach(item=>
      this.getLeafKeys(item,arr))
    },
    //监听分配权限对话框的关闭事件
    setRightDialogClosed(){
      this.defKeys=[]
    },
    //点击为角色分配权限
    async allotRights(){
      const keys=[
        ...this.$refs.treeRef.getCheckedKeys(),
        ...this.$refs.treeRef.getHalfCheckedKeys()
      ]
      // console.log(keys);
      const idStr=keys.join(',')
       const {data:res}= await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
      if(res.meta.status!==200){
        return this.$message.error('分配权限失败')
      }
      this.$message.success('分配权限成功')
      this.getRoleList()
      this.setRightDialogVisible=false
    }
   },
}
</script>
<style lang="less" scoped>
  .el-tag{
    margin: 7px;
  }
  .bdtop{
    border-top: 1px solid #ccc
  }
  .bdbottom{
    border-bottom: 1px solid #ccc
  }
</style>